Protect-A-Bed BugLock Plus Bed Bug Mattress Encasement, King jersey-knit and Polypropylene Imported Fits King size mattresses 8 to 12 in. high Dimensions: 76x80 in Polyurethane Miracle Membrane lining on top sleep surface is also waterproof BugLock with Secure Seal locks bed bugs in or out protecting your mattress Stretch-knit side panels allow for easy installation Machine washable in warm or hot water. Tumble dry on medium heat. Do not bleach or dry clean